Inking mechanism for printing-presses.



8.1. SLYTER.

INKING MECHANISM FOR PRINTING PRESSES.

INVENTOR.

A TTORNE Yi.

WITNESSES:

. D g AlgnlsgwNT EFT-QB.

BYRON Jossrrr sLrrna, orsait FItANCISCO, oanrroanra, ASSIGNOR on ons-HAIL? To enonensarnseemieivi, .or sen rnanorsoo, CALIFORNIA,

minim MECHANISM roe PRINTING-renews.

Specification of Letters Patent.

Patented Oct; 10, 1916.

Application filEdAuEilSfZO, 1913; Serial No. 785,717.

Torall whom it may concern Bel'it known that I, BYRON J OSEPH'-SLY- TER,-;a citizen of the United States, residing at and whose post-ofliceaddressis 22 'Valley Mechanisms for Printing-Presses.

Tl11S- 1I1VGIll3l0I1 relates more particularly toian attachment to the regular inking rollers, of a-set of distribution rollers, in contact therewith and driven thereby.

0bject8.Among the many objects of this invention are: to provide means for distributing the ink on the form rollers evenly, to insure an even inking ofthe type surface in the form, over which the form rollers :pass; to provide means for controlling the application of ink to the form to be printed, regardless of the quantity of ink desired, or its-consistency or body.

The:invention possesses other advantageous features, tliatwitli the foregoing will beset forth: at length, in the follovving'description, wherein I shall outline in full that form of the invention selected for illustration in the drawings, accompanying and formingipartof the present specification.

The novelty of the'inventionwill be included in'the claimssucceeding said d'esoriptioni From this it isapparent, that Id'o not restrict myself to the showing made bysaid drawingsand description, as I'may ad'opt'many variations within the scope of my invention, as expressed in said claims.

Drawings.'1n the drawings: Figure l isa fragmentary perspective view of the inkingmechanis'm of a conventional platen printing" press, having this invention ap plied thereto. Figi 2' is'an' end View of the inking rollers and the mountings of the same, illustrating the application of this invention as an attachment thereto. Fig. 3- is a diagrammatic end view of the regular inking rollers; illustrating: the relation thereto of the-distributionrollers of this in vention;

C0fist7lldfil7'hz-Tl1e construction of this invention as illustrated in-- the drawings,

includes the distribution-rollers'l, 2-and 3. These rollers are preferably of the-regular printing roller formula composition, tempered or modified to suit the particular class of Work to which they are applied, and cast about metallic coresor shafts 4, 5 and: 6.

These shafts are provided with the enlarge ments or eollars 7, 8 and 9, vand are, journaled I in the bearings provided in the end blocks 1010. a

The end blocks 10'10 will vary with the type of saddles in whichthe regular rollers 12,- and 13 are journaledc These saddles usually comprise, as shown, a stem 14: with the transversehead 15, having the open bearings-1616 within which the shaftsl'? and 18of the rollers'are journaled. The ends of the heads 15, have the depending lugs 19'19 drilled to receive the transverse pin 20,-inserted toprevent the accidental disengagement of the rollers from the heads 15.

The roller saddles are attached With interposed springs, to a swinging arm X geared to the driving mechanism of the press, the swing of this" arm causes the attached rollers'to ride'over thesurface of the ink disk 21, thence returning, and down over the surface of the form. The traction rollers on'both ends'of the several shafts- The ink-is usually applied 'to' the disk near the upper edge, as'the disk is rotated past the fountain situated at'the upper edge of the inclined disln The up stroke of the swinging arm X carries the form rollersup' ward acrossthesurface of the-ink disk, from which they'pick up the ink and distributeit ontothe disk; This rolling action is depended upon to distribute the ink The rollers evenly, throughout the lengt ofall the rollers, and the surface of the disk. The return stroke of the swinging arm X, carries the form rollers downward across the disk and over the form, during the interval that the platen swings back from the form. The above described inking action is more or less unsatisfactory, and confines this type of press to job work of small and limited surfaces, because 'of the unequal and uneven distribution of the ink over the form, due to the insuflicient working or diffusion of the ink over the ink disk, and its transfer to the form rollers, in the short interval elapsing between strokes of the press. A third inking form roller 24, is provided in an independent saddle, to facilitate rounding the corner 25 in the tracks 23, the function and operation of this roller is identical with the rollers 12 and 13.

. This invention is applied in the following manner, and increases the efficiency of the regular inking mechanism, as will be hereinafter described. The end blocks 10 10 as shown include the depending hook 26-26, giving to the internal contour of the end blocks the same outline as the saddles 11-11 over which they are slipped, and secured by the pins 20, extending through the hooks 26-26, and the lugs 19-l9 of the saddles. This assemblage makes the end blocks a combinative part of the saddles 1111 in all their evolutions. The distribution roller 1, is located between the two form rollers 12 and 13 in tractive contact therewith. The distribution rollers 2 and 3 are located above the form rollers 12 and 13 respectively, and in tractive contact therewith, substantially as shown. The ends of the shafts l, 5 and 6 of the respective distribution rollers are journaled in the end blocks as described, the collars 7, 8 and 9, reventing undue end play of these rollers, by abut ment with the adjacent end blocks. By a mere duplication of parts, a distribution roller or rollers could be applied to the single roller 24, but practice proves that this is not often required, except in very fine work where the ink must be regulated to a great nicety.

0perati0n.-The distribution rollers being in tractive contact with the form rollers, are rotated thereby in the reverse direction thereto, and being preferably considerably less in diameter, make several revolutions to one revolution of the form rollers. This difference in speed ratio, results in a quick and even dissipation of any excess of ink, accumulated at any point on the form roller, and its uniform distribution throughout the surface of either or both of the form rollers, in contact with the distribution roller 1, and its further distribution on the respective rollers by their contacting distribution rollers.

. It is obvious that the distribution rollers picking up and holding the surplus ink from the form rollers, will feed this surplus during the period that the form rollers are travcling over the form and will give this surplus to the form rollers, as the form ,rollers give off their ink to the form, insuring a uniform inking of the form even though it contain, blocks, or plates of large area requiring much ink insuring also that the proper functioning of the distribution rollers will prevent the deposit of an excess of ink at any point 011 the form.

By the use of this invention the maximum quantity of ink can be applied to the form without danger of blotting; very heavy viscous inks can be handled; or very thin tint can be applied evenly to tint blocks without danger of clouding, uneven or graduated distribution of ink on forms of large area.

In addition to the many technical advantages attending the use of this invention, it is simple, easily applied, and direct acting, requiring no extra skill in the operator to apply or operate it, and it requires no extra power or gearing to drive it. It broadens the field of the platen press for the successful printing of tint blocks; labels; outlines and solid printings; both for large and small forms, in a manner and with results not heretofore attained, so far asI am aware, except on cylinder presses.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is;

1 In a printing press, end saddles having depending lugs; inking rollers journaled in said saddles; end blocks having depending hooks engaging said lugs; attaching pins passing through said lugs and said hooks; distribution rollers journaled in said blocks in tractive contact with the said inking rollers.

2. In a printing press in combination, end saddles having depending lugs, inking rollers journaled in said saddles, end blocks having depending hooks engaging said lugs, attaching pins passing through said lugs and said hooks, and distribution rollers journaled in said blocks in tractive contact with said inking rollers, said distributing rollers having axles provided with collars adapted to engage said blocks whereby the axial position of the distribution rollers is limited.

3. In a printing press in combination, end saddles, inking rollers journaled in said saddles, end blocks carried by said saddles, means for attaching said blocks to said saddles, and distribution rollers journaled in said blocks in tractive contact with the said inking rollers, said distribution rollers having axles provided with collars adapted to engage said blocks whereby the axial position of the distribution rollers is limited.

4. In a printing press in combination, end saddles having depending lugs, inking rollers journaled in said saddles, end blocks havone inking roller only, and attaching pin ing depending hooks engaging said lugs, passing through said lugs and said hooks. inking rollers j ournaled in said saddles, distribution rollers journaled in said end BYRON JOSEPH SLY 5 blocks, one of said distribution rollers trac- Witnesses:

tively engaging two inking rollers and the ALFRED G. Roo'r,

other distribution roller tractively engaging EUGENE G. STRIOKLER.

copies 01' this patent may be obtained for five cents each, by addressing the "Commissioner or Iatents.

Washington, I). G. 

